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Three cubes, of sides l0, al0 and bl0, are placed in contact, with their centres along...

Three cubes, of sides l0, al0 and bl0, are placed in contact, with their centres along a straight line, as shown. What is the position, along this line, of the CM of this system? Assume the cubes are made of the same uniform material, a=2.43 and b=3.43. Express your answer as a multiple of l0. (Do not enter units.)

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